@article{ref1,
title="Performance effects in 17-day simulated space flights",
journal="Aerospace medicine",
year="1962",
author="Hartman, B. and McKenzie, R. E. and Welch, B. E.",
volume="33",
number="",
pages="1098-1102",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0001-9402",
doi="",
url="http://dx.doi.org/"
}